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我在Android上遇到Appwidget问题。我有一个listView和一个按钮,并且Widget的更新周期设置为30分钟。 现在我想单击按钮时更新listView。我在网上搜索了这个问题,但我还没有找到解决问题的答案。 在我的代码中,我必须在onReceived()方法上写什么来获取小部件更新?Android AppWidget更新ListView
我的代码:
public class WidgetProvider extends AppWidgetProvider {
private static final String ACTION_UPDATE_CLICK = "click";
private Date date;
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
final int N = appWidgetIds.length;
for (int i = 0; i < N; ++i) {
RemoteViews remoteViews = updateWidgetListView(context,
appWidgetIds[i]);
appWidgetManager.updateAppWidget(appWidgetIds[i], remoteViews);
remoteViews.setOnClickPendingIntent(R.id.bMorgenWidget,
getPendingSelfIntent(context,
ACTION_UPDATE_CLICK));
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
private PendingIntent getPendingSelfIntent(Context context, String action) {
Intent intent = new Intent(context, getClass());
intent.setAction(action);
return PendingIntent.getBroadcast(context, 0, intent, 0);
}
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
if (ACTION_UPDATE_CLICK.equals(intent.getAction())) {
}
}
private RemoteViews updateWidgetListView(Context context, int appWidgetId) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
R.layout.widget_layout);
Intent svcIntent = new Intent(context, WidgetService.class);
svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
svcIntent.setData(Uri.parse(svcIntent.toUri(Intent.URI_INTENT_SCHEME)));
remoteViews.setRemoteAdapter(appWidgetId, R.id.listViewWidget,
svcIntent);
remoteViews.setEmptyView(R.id.listViewWidget, R.id.empty_view);
return remoteViews;
}
}